Vibration damper



FIG. 1 is an elevation view of a vibration damper showing my new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a bottom plan view thereof.

The broken lines present in the figures are included for the purpose ofillustrating portions of the article that form no part of the claimeddesign.

CLAIM We claim the ornamental design for a vibration damper, as shownand described.